United States Transportation: In the 21st century, self-driving cars and smart cars are becoming more and more popular. (18 jun 2000 ano – 7 abr 2018 ano)

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Self-driving cars, also known as a robot car, autonomous car, auto, or driverless car, is a vehicle that is able to sense its environment and move with little or no human input. Smart cars are currently being used, but are in their early stage of development and will continue to grow in the years coming.

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